Question # 1

The S.I unit of power is :

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j/s2

J

W

J/M2

A body possesses if it is capable to do work:

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Energy

Power

Force

All

If mass of body is 10 kg travelling with speed of light, how much energy is generated?

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E = 9 × 1017 J

E = 9 × 1015 J

E = 9 × 1018 J

E = 9 × 1016 J

1 MJ=

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10³ J

10⁶J

10⁷J

10^-3J

Work is done when force displace inits own _____________

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Way

Method

Direction

None

The unit of work is :

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J

N

Ns

m

The work done in lifting a brick of mass 2 kg through a height of 5 m above the ground will be:

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2.5 J

12.5 J

50 J

100 J

Rate of doing work is called:

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Energy

Torque

Power

Moment

How many components are there of a solar heating system?

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2

3

4

5

If W stands for work, F stands for force and S stand for displacement, than mathematical work is defined as

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W = P x S

W = F x v

W = F x r

W = F x S

The rate of doing work is called :

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Power

Work

Efficiency

None of above

What kind of waste is produced by nuclear power plant?

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Carbon di oxide

Radio active

Fuels

Toxic material

The energy stored in coal is:

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Heat energy

Kinetic energy

Chemical enegy

Nuclear energy

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